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  • traveling salesman problem, 2-opt algorithm c# implementation

    - by TAB
    Hello Can someone give me a code sample of 2-opt algorithm for traveling salesman problem. For now im using nearest neighbour to find the path but this method is far from perfec, and after some research i found 2-opt algorithm that would correct that path to the acceptable level. I found some sample apps but withoud source code.

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  • Check if Checkbox is checkd?

    - by streetparade
    Im trying to get some checkbox with a specific name document.getElementsByName("test"); Unfortunatley i cant check if it is checked or not here is the code for(i=0;i<check.length;i++) { if(check[i].checked==true) { alert(check[i].value); } } Is somewhere a typo?

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  • Data Formatters temporarily unavailable

    - by Zac Altman
    Im trying to use Date Formatters (UIDateFormatter), but I keep getting this error: Program received signal: “EXC_BAD_ACCESS”. Data Formatters temporarily unavailable, will re-try after a 'continue'. (Unknown error loading shared library "/Developer/usr/lib/libXcodeDebuggerSupport.dylib")

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  • Shoutcast streaming

    - by jn
    hi, im currently working on a app for a podcast (katg.com) which will let you listen live etc... however, i have not found any open source code available to stream shoutcast. I know there are some ways of doing it, but I find it hard to find any available code on the net that explains it for a java/android beginner like myself. Anyone know of any libs/tutorial/examples/code that shows how to do this on android? Thanks JN

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  • Sharing cookies/session from WebView to HttpClient doesn't work

    - by Toni Kanoni
    I know this question has been asked a hundred times, and I've read and tried for 2 hours now, but I can't find my error :-( I am trying to create a simple webbrowser and therefore have a webview, where I login on a site and get access to a picture area. With help of a DefaultHttpClient, I want to make it possible to download pictures in the secured area. Therefore I am trying to share the cookies from the webview and pass them on to the HttpClient, so that it is authenticated and able to download. But whatever I try and do, I always get a 403 response back... Basically the steps are the following: 1) Enter URL, webview loads website 2) Enter login details in a form 3) Navigate to picture and long hold for context menu 4) Retrieve the image URL and pass it on to AsynTask for downloading Here's the code of the AsyncTask with the Cookie stuff: protected String doInBackground(String... params) { //params[0] is the URL of the image try { CookieManager cookieManager = CookieManager.getInstance(); String c = cookieManager.getCookie(new URL(params[0]).getHost()); BasicCookieStore cookieStore = new BasicCookieStore(); BasicHttpContext localContext = new BasicHttpContext(); localContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore); String[] cookieParts = null; String cookies[] = null; cookies = c.split(";"); for(int i=0;i<cookies.length;i++) { cookieParts = cookies[i].split("="); BasicClientCookie sessionCookie = new BasicClientCookie(cookieParts[0].trim(), cookieParts[1].trim()); sessionCookie.setDomain(new URL(params[0]).getHost()); cookieStore.addCookie(sessionCookie); } DefaultHttpClient httpClient = new DefaultHttpClient(); httpClient.setCookieStore(cookieStore); HttpGet pageGet = new HttpGet(new URL(params[0]).toURI()); HttpResponse response = httpClient.execute(pageGet, localContext); if(response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) -- NEVER Happens, always get 403 .) One of the problems is that the webview saves some cookies for the host *www.*example.com, but the image-URL to download (params[0]) is *static.*example.com. The line cookieManager.getCookie(new URL(params[0]).getHost()); returns null, because there is no cookie for static.example.com, but only for www.example.com. .) When I manually say cookieManager.getCookie("www.example.com"); I get some cookies back, which I add to the HttpClient cookie store: There are 5 cookies added - testcookie = 0 - PHPSESSID = 320947238someGibberishSessionId - email = [email protected] - pass = 32423te32someEncodedPassGibberish - user = 345542 So although these cookies, a session ID and other stuff, get added to the HttpClient, it never get's through to download an image. Im totally lost... though I guess that it either has something to do with the cookies domains, or that Im still missing other cookies. But from where the heck should I know which cookies exist in the webview, when I have to specify a specific URL to get a cookie back?? :-( Any advice?

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  • Image Resources in WinForms

    - by Power-Mosfet
    I want to store images in a .dll file and use them for my winform application. but Im not able to load .dll content. System.IO.Stream stream; System.Reflection.Assembly assembly; Image bitmap; assembly = System.Reflection.Assembly.LoadFrom(Application.ExecutablePath); stream = assembly.GetManifestResourceStream("global::template.Properties.Resources.test.png"); bitmap = Image.FromStream(stream); this.background.titleImage = bitmap; // image box

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  • Count string value?

    - by Adam
    Hey, Im a newbie in cocoa and I have a string and I am trying to count how long it is. I have been searching through Apples docs but I can't find anything. NSString *word = @"word"; How would I figure out how many characters is in a string? Thanks

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  • C# getting mouse coordinates from a tab page when selected

    - by Tom
    I wish to show the mouse coordinates only when i am viewing tabpage7. So far i have: this.tabPage7.MouseMove += new System.Windows.Forms.MouseEventHandler(this.OnMouseMove); protected void OnMouseMove(object sender, MouseEventArgs mouseEv) { Console.WriteLine("happening"); Console.WriteLine(mouseEv.X.ToString()); Console.WriteLine(mouseEv.Y.ToString()); } but this doesn't appear to be doing anything, could someone help show me what im doing wrong please?

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  • Active Directory and NTLM Authentication

    - by Alkersan
    Im writing an IIS Application, which manages AD users. For this purpose Ive configured site to use Negitiate AuthenticationProvider, and everything works. I wonder, is NTLM suitable for operations with Active Directory (such as creating user accounts)? Or AD accepts only Kerberos authentication?

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  • fft understanding

    - by maximus
    Can somebody give a good explanation of FFT image transform How the FFT transformed image and it's Re^2+Im^2 image can be analyzed? I just want to understand something when loiking to the image and it's frequency.

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  • iAds on landscape

    - by Carlos Vargas
    Hey guys Im having trouble with iAds in landscape mode This is part of my code: banner = [[ADBannerView alloc]init] ; banner.currentContentSizeIdentifier = ADBannerContentSizeIdentifier480x32; [self.view addSubview:banner]; [banner release]; But is not working for me, it gives me error, gives me a SIGABRT error in the second line of the code. I am not having problems with the portrait mode... please help. Best Regards Carlos Vargas

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  • C# converting string to hex and XOR on Hex numbers

    - by Scott's Oasys
    Im tring to do an XOR on 2 hex numbers to create a unique hex number ex. 7F4 ^ 65D which would equal 1A9 I understand how the XOR should work but every time I try to convert the string hex number: string hex1 = "7F4"; int hexInt = Convert.ToInt32(hex1, 16); I end up with a number: 2036 How do I keep the integrity of the hex number so I can do an XOR on the 2 hex numbers?

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  • Flash -> ByteArray -> AMFPHP -> Invalid Image !??

    - by undefined
    Hi, Im loading images into Flash and using JPGEncoder to encode the image to a ByteArray and send this to AMF PHP which writes out the bytearray to a file. This all appears to work correctly and I can download the resulting file in Photoshop CS4 absolutely fine. When i try to open it from the desktop or open it back in Flash it doesnt work... Picasa my default image browser says "Invalid" Here is the code i use to write the bytearray to a file - $jpg = $GLOBALS["HTTP_RAW_POST_DATA"]; file_put_contents($filename, $jpg); That's it ... I use the NetConnection class to connect and call the service, do I need to say Im sending jpg data? I assumed that JPGEncoder took care of that. How can I validate the bytearray before writing the file? Do I need to set MIME type or something .. excuse the slightly noob questions, a little knowledge can be a dangerous thing. Thanks --------------------------------------- PART II ------------------------------------------ Here is some code - 1) load the image into Flash player item.load(); function _onImageDataLoaded(evt:Event):void { var tmpFileRef:FileReference=FileReference(evt.target); image_loader=new Loader ; image_loader.contentLoaderInfo.addEventListener(Event.COMPLETE, _onImageLoaded); image_loader.loadBytes(tmpFileRef.data); } function _onImageLoaded(evt:Event):void { bitmap=Bitmap(evt.target.content); bitmap.smoothing=true; if (bitmap.width>MAX_WIDTH||bitmap.height>MAX_HEIGHT) { resizeBitmap(bitmap); } uploadResizedImage(bitmap); } function resizeBitmap(target:Bitmap):void { if (target.height>target.width) { target.width=MAX_WIDTH; target.scaleY=target.scaleX; } else if (target.width >= target.height) { target.height=MAX_HEIGHT; target.scaleX=target.scaleY; } } function uploadResizedImage(target:Bitmap):void { var _bmd:BitmapData=new BitmapData(target.width,target.height); _bmd.draw(target, new Matrix(target.scaleX, 0, 0, target.scaleY)); var encoded_jpg:JPGEncoder=new JPGEncoder(90); var jpg_binary:ByteArray=encoded_jpg.encode(_bmd); _uploadService=new NetConnection(); _uploadService.objectEncoding=ObjectEncoding.AMF3 _uploadService.connect("http://.../amfphp/gateway.php"); _uploadService.call("UploadService.receiveByteArray",new Responder(success, error), jpg_binary, currentImageFilename); } Many thanks for you help

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  • ASP.NET Conversion failed when converting from a character string to uniqueidentifier

    - by c11ada
    hey all, i have a table which has a primary key (UserID) this is of type UniqueIdentifier. im trying to insert a value into this field but i keep getting an error. i want to get the userID of the current user and insert the into the user_Details table, but i keep getting this error Conversion failed when converting from a character string to uniqueidentifier can some one please help me thanks

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  • CD/DVD WRITER I/O ERROR !!!

    - by bobby
    http://www.mediafire.com/imageview.php?quickkey=jqzdbd5n0nl i am getting the above error wen i am trying to burn a cd/dvd on my dvd writer. im am getting dis error for evry cd/dvd..!! i hv included a screenshot.above.

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  • Prevent Coldfusion from encoding html

    - by cr1ms0n3cho
    I am trying to return html from <cfsavecontent variables="html"> <p>Some html</p> </cfsavecontent> <cfreturn html> But when it comes back from the function the html is encoded I found this thread http://www.coldfusionjedi.com/forums/messages.cfm?threadid=BB31B124-19B9-E658-9D3F5726B8607FD8 which has some solutions but im hoping for something a little less messy. Any help is appreciated! Thanks

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  • Smart client software factory view activation problem

    - by vinay
    Hi, Im using smart client software factory in our application i created one workspace dynamically,based on that i can create n numbers of views.the view is modal dialog and i have used some window workspace. but the problem is i have to implement save all fuctionalities in menu. but i dont know which view is activated/focused How to get the focused screen,is their any event will fore if on focus change. Please help on this aspect. Thanks , Vinay

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  • selectOneMenu - java.lang.NullPointerException when adding record to the database (JSF2 and JPA2-OpenJPA)

    - by rogie
    Good day to all; I'm developing a program using JSF2 and JPA2 (OpenJPA). Im also using IBM Rapid App Dev't v8 with WebSphere App Server v8 test server. I have two simple entities, Employee and Department. Each Department has many Employees and each Employee belongs to a Department (using deptno and workdept). My problem occurs when i tried to add a new employee and selecting a department from a combo box (using selectOneMenu - populated from Department table): when i run the program, the following error messages appeared: An Error Occurred: java.lang.NullPointerException Caused by: java.lang.NullPointerException - java.lang.NullPointerException I also tried to make another program using Deptno and Workdept as String instead of integer, still doesn't work. Pls help. Im also a newbie. Tnx and God bless. Below are my codes, configurations and setup. Just tell me if there are some codes that I forgot to include. Im also using Derby v10.5 as my database: CREATE SCHEMA RTS; CREATE TABLE RTS.DEPARTMENT (DEPTNO INTEGER NOT NULL GENERATED ALWAYS AS IDENTITY (START WITH 1, INCREMENT BY 1), DEPTNAME VARCHAR(30)); ALTER TABLE RTS.DEPARTMENT ADD CONSTRAINT PK_DEPARTMNET PRIMARY KEY (DEPTNO); CREATE TABLE RTS.EMPLOYEE (EMPNO INTEGER NOT NULL GENERATED ALWAYS AS IDENTITY (START WITH 1, INCREMENT BY 1), NAME VARCHAR(50), WORKDEPT INTEGER); ALTER TABLE RTS.EMPLOYEE ADD CONSTRAINT PK_EMPLOYEE PRIMARY KEY (EMPNO); Employee and Department Entities package rts.entities; import java.io.Serializable; import javax.persistence.*; @Entity public class Employee implements Serializable { private static final long serialVersionUID = 1L; @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private int empno; private String name; //bi-directional many-to-one association to Department @ManyToOne @JoinColumn(name="WORKDEPT") private Department department; ....... getter and setter methods package rts.entities; import java.io.Serializable; import javax.persistence.*; import java.util.List; @Entity public class Department implements Serializable { private static final long serialVersionUID = 1L; @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private int deptno; private String deptname; //bi-directional many-to-one association to Employee @OneToMany(mappedBy="department") private List<Employee> employees; ....... getter and setter methods JSF 2 snipet using combo box (populated from Department table) <tr> <td align="left">Department</td> <td style="width: 5px">&#160;</td> <td><h:selectOneMenu styleClass="selectOneMenu" id="department1" value="#{pc_EmployeeAdd.employee.department}"> <f:selectItems value="#{DepartmentManager.departmentSelectList}" id="selectItems1"></f:selectItems> </h:selectOneMenu></td> </tr> package rts.entities.controller; import com.ibm.jpa.web.JPAManager; import javax.persistence.EntityManager; import javax.persistence.EntityManagerFactory; import com.ibm.jpa.web.NamedQueryTarget; import com.ibm.jpa.web.Action; import javax.persistence.PersistenceUnit; import javax.annotation.Resource; import javax.transaction.UserTransaction; import rts.entities.Department; import java.util.List; import javax.persistence.Query; import java.util.ArrayList; import java.text.MessageFormat; import javax.faces.model.SelectItem; @SuppressWarnings("unchecked") @JPAManager(targetEntity = rts.entities.Department.class) public class DepartmentManager { ....... public List<SelectItem> getDepartmentSelectList() { List<Department> departmentList = getDepartment(); List<SelectItem> selectList = new ArrayList<SelectItem>(); MessageFormat mf = new MessageFormat("{0}"); for (Department department : departmentList) { selectList.add(new SelectItem(department, mf.format( new Object[] { department.getDeptname() }, new StringBuffer(), null).toString())); } return selectList; } Converter: package rts.entities.converter; import javax.faces.component.UIComponent; import javax.faces.context.FacesContext; import javax.faces.convert.Converter; import rts.entities.Department; import rts.entities.controller.DepartmentManager; import com.ibm.jpa.web.TypeCoercionUtility; public class DepartmentConverter implements Converter { public Object getAsObject(FacesContext facesContext, UIComponent arg1, String entityId) { DepartmentManager departmentManager = (DepartmentManager) facesContext .getApplication().createValueBinding("#{DepartmentManager}") .getValue(facesContext); int deptno = (Integer) TypeCoercionUtility.coerceType("int", entityId); Department result = departmentManager.findDepartmentByDeptno(deptno); return result; } public String getAsString(FacesContext arg0, UIComponent arg1, Object object) { if (object instanceof Department) { return "" + ((Department) object).getDeptno(); } else { throw new IllegalArgumentException("Invalid object type:" + object.getClass().getName()); } } } Method for Add button: public String createEmployeeAction() { EmployeeManager employeeManager = (EmployeeManager) getManagedBean("EmployeeManager"); try { employeeManager.createEmployee(employee); } catch (Exception e) { logException(e); } return ""; } faces-conf.xml <converter> <converter-for-class>rts.entities.Department</converter-for-class> <converter-class>rts.entities.converter.DepartmentConverter</converter-class> </converter> Stack trace javax.faces.FacesException: java.lang.NullPointerException at org.apache.myfaces.shared_impl.context.ExceptionHandlerImpl.wrap(ExceptionHandlerImpl.java:241) at org.apache.myfaces.shared_impl.context.ExceptionHandlerImpl.handle(ExceptionHandlerImpl.java:156) at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:258) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:191) at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1147) at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:722) at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:449) at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178) at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1020) at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:87) at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:886) at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1655) at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:195) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:452) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:511) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:305) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:276) at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214) at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113) at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165) at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217) at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161) at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138) at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204) at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775) at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905) at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1650) Caused by: java.lang.NullPointerException at rts.entities.converter.DepartmentConverter.getAsString(DepartmentConverter.java:29) at org.apache.myfaces.shared_impl.renderkit.RendererUtils.getConvertedStringValue(RendererUtils.java:656) at org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils.getSubmittedOrSelectedValuesAsSet(HtmlRendererUtils.java:444) at org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils.internalRenderSelect(HtmlRendererUtils.java:421) at org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils.renderMenu(HtmlRendererUtils.java:359) at org.apache.myfaces.shared_impl.renderkit.html.HtmlMenuRendererBase.encodeEnd(HtmlMenuRendererBase.java:76) at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:519) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:626) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:622) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:622) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:622) at org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.renderView(FaceletViewDeclarationLanguage.java:1320) at org.apache.myfaces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:263) at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:85) at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:239) ... 24 more

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  • How are hash functions like MD5 unique?

    - by Aly
    Im aware that MD5 has had some collisions but this is more of a high level question about hashing functions. If MD5 hashes any arbitrary string into a 32-digit hex value, then according to the Pigeonhole Principle surely this can not be unique as there are more unique arbitrary strings than there are unique 32-digit hex values

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  • iphone tableview within detailview

    - by pete
    Hi, im pushing a "detailview" to a navigationcontroller (RootViewController.m) [self.navigationController pushViewController:MyDetailView animated:YES]; "detailview" contains a tableview (DetailViewController.m) - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { //push seconddetailview into navigationcontroller - how can i do that? } how do i load the seconddetailView into the main navigationcontroller? thanks pete

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